This article includes Cornell University's fraternities and sororities. The Cornell University Greek system dates to the first months of university operation during the autumn of 1868. Cornell's co-founder and first president, Andrew Dickson White, was a strong promoter of fraternities as a means of teaching students the principles and responsibilities of self-governance. Among its leaders, other strong supporters of the Greek system were Presidents Edmund Ezra Day and Frank H.T. Rhodes.

Among general ("social") organizations, Cornell currently recognizes 26 Interfraternity Council fraternities, 11 Panhellenic Association sororities, and 15 Multicultural Greek and Fraternal Council fraternities and sororities.

Several national organizations were founded at Cornell. The first intercollegiate social fraternity for black men, Alpha Phi Alpha, was founded at Cornell on December 4, 1906. Delta Chi was founded in 1890 as a professional law fraternity, becoming a general fraternity in 1909. Sigma Delta Tau, originally named Sigma Delta Phi, was established in 1917, Lambda Upsilon Lambda in 1982, and Lambda Pi Chi in 1988.

Interfraternity Council

Fraternities constituting the Interfraternity Council (IFC) are listed by dates of local founding and noted with national conference membership where applicable. As of 2026, there are 26 male-only fraternities. Fraternities may be suspended ("de-recognized") or closed for disciplinary or other reasons as determined by the IFC, governing bodies, including national organizations, and/or the University. Dormant houses, which include both closed fraternities and/or those that have forfeited their housing, are italicized. Active houses, including those that have been suspended for a year or less, are in bold.

Active chapters NIC indicates current members of the North American Interfraternity Conference; PFA indicates current and former members of the Professional Fraternity Association.

OrganizationLettersChapterCharter date and rangeAffiliationChapter house addressZeta PsiΖΨPsi1868NIC534 Thurston AvenueAlpha Delta PhiΑΔΦCornell1869NIC777 Stewart AvenueChi PsiΧΨPsi1869–1875, 1885–2014, 2016NIC810 University AvenueBaird's 5th ed., p.81, accessed April 1, 2020Delta UpsilonΔΥCornell1869–2002, 2004NIC6 South AvenueDelta Kappa EpsilonΔΚΕDelta Chi1870–2013, 2017NIC13 South AvenuePhi Delta ThetaΦΔΘNew York-Alpha1872–1876, 1886–1970, 1973Independent2 Ridgewood RoadBeta Theta PiΒΘΠBeta Delta1879NIC100 Ridgewood RoadPhi Gamma DeltaΦΓΔ (FIJI)Cornell1888–1989, 1993–2020, 2022NIC118 McGraw PlacePhi Sigma KappaΦΣΚGamma1889NIC702 University AvenueDelta ChiΔΧAlpha1890–2003, 2007NIC102 The KnollDelta Tau DeltaΔΤΔBeta Omicron1890NIC104 Mary Ann Wood DriveSigma ChiΣΧAlpha Phi1890NIC106 Cayuga Heights RoadSigma Alpha EpsilonΣΑΕCornell1891–1895, 1898–2011, 2022NIC122 McGraw PlaceKappa SigmaΚΣAlpha Kappa1892–2010, 2012Independent600 University AvenueSigma NuΣΝGamma Theta1901–2018, 2021NIC230 Willard WayAcaciaNo. 14 Cornell1907NIC318 Highland RoadZeta Beta TauΖΒΤKappa1907–1982, 1989–2013, 2014NIC1 Edgecliff PlaceAlpha Sigma PhiΑΣΦIota1909NIC804 Stewart AvenueSigma Alpha MuΣΑΜBeta1911–1912, 1915–1973, 1985–2021, 2022NIC14 South AvenueKappa Delta RhoΚΔΡBeta1913–1943, 1950NIC312 Highland RoadLambda Chi AlphaΛΧΑOmicron1913NIC125 Edgemoor LaneAlpha Gamma RhoΑΓΡZeta1914NIC, PFA203 Highland AvenuePi Kappa AlphaΠΚΑBeta Theta1917-2010, 2013NIC17 South AvenueSigma PiΣΠMu1917NIC730 University AvenuePi Kappa PhiΠΚΦPsi1921–1937, 1949–1986, 1990–2001, 2002NIC55 Ridgewood RoadPhi Kappa TauΦΚΤAlpha Tau1930–1994, 2000NIC106 The Knoll

Chapters with name changes

Irving Society - 1868–1869, evolved into - Alpha Sigma Chi, 1871–1879, absorbed into - Epsilon Kappa Pi (local), 188x ?–1888, became L and J Club - 1895–1913, became (see ) Skull - 1901–1918, became Bandhu - 1902–1918, became - Theta Lambda Phi, 1903–1912, became Zodiac - 1904–1936, absorbed into after a failed absorption by Beta Kappa Cerberus - 1904–1911, became ΦΚΣ Cayuga Club - 1905–1910, became (see ) - Omega Pi Alpha, 1905–1907, see Nayati (local) - Kappa Psi, 1907–1923, local, became Nayati - 1907–1919, local, became Obelisk - 1907-1910, local, see Phi Delta Sigma, 1908–1930, became ISWZA - 1908–1913, local, became Arts and Science Club - 1908–1922, became Amphia - 1909-1912, became ΘΧ - Beta Sigma (local), 1910–1911, Jewish, became - , 1910–1920, Jewish, became - Sigma Phi Sigma, 1910–1941, see - Phi Epsilon Pi, 1911–1970, became Cadeucus - 1911–1914, local, became Eleusis, 1912–1931, local, became ΘΚΝ, (see ). - Alpha Theta, 1912–1917, local, became Cornell Pike history , accessed October 3, 2016. Not to be confused with the Dartmouth local of the same name. - Omicron Alpha Tau, 1912–1934, Jewish, merged with - Phi Sigma Delta, 1912–1970, became - Phi Beta Delta, 1912–1918, 1934–1941, Jewish, see ΠΛΦ - Omega Delta, 1913–1917, local, became - Omicron Sigma Omicron, 1914–1915, local, became , (see ) - Theta Alpha, 1915–1933, see ΔΣΛ - Phi Tau, 1915–1916 (local), Jewish, became Komos Club - 1916–1921, became - Beta Sigma Rho, 1920–1972, Jewish, merged with Scorpion Club - 1923–1940, became Ithacating blog, posted June 12, 2008, accessed January 19, 2017 - Phi Delta Mu, 1925–1934, Jewish, see - Beta Psi, 1926–1935, dormant, see The 1933 Cornellian Yearbook lists Beta Psi, The December 1934 Omegan newsletter from Theta Upsilon Omega, accessed January 20, 2020, - Sigma Omega Psi, –1934?, Jewish, see - Theta Kappa Phi, 1927–1931, became ΦΚΘ - Theta Kappa Nu, 1931–1939 (NIC), merged into - Beta Kappa, 1934–1936 (NIC), see ΘΧ Cornell Engineering Men - 194x ?–1942, local, became Triangle - Kappa Nu, 1951–1963, Jewish, see - Phi Alpha, 1953–1959, Jewish, merged into (see ) - Phi Sigma Epsilon, 1963–1985 (NIC), see and . - Phi Delta Alpha, 1970–1973, see

Dormant chapters

- Kappa Alpha Society, 1868–1990, 2007–2018 (NIC) ΧΦ - Chi Phi, Xi Chapter, 1868–1881, 1888–2024 (NIC). Suspended since November 2024 after allegations of druggings and sexual assault. University-owned house at 107 Edgemoor Lane - Alpha Omega, 1868–1870, localBaird's 6th - Alpha Omega - Phi Kappa Psi, 1869–1877, 1885–2020 (NIC). University-owned house at 120 Mary Ann Wood Drive. Indefinitely suspended following the death of Antonio Tsialas. ΘΔΧ - Theta Delta Chi, Beta Charge, 1870-1999, 2003–2023 (NIC). Agreed to withdrawal of recognition for at least three years, effective fall 2023, for violations of social event policy - Sigma Delta Pi (Vitruvian), 1871–1874 - Psi Upsilon, 1876–2016 (NIC) University-owned house at 2 Forest Park Lane. - Theta Nu Epsilon, 1877–1913The 1889/90 Cornellian yearbook accessed January 20, 2020. - Delta Beta Phi, 1878–1882. Alpha chapter of this small, short-lived national. - Alpha Tau Omega, 1887–2013 (NIC) Q.T.V. - 1888–1889Bairds 7th QTV ΣΦ - Sigma Phi, New York-Epsilon chapter, 1890–2025 (NIC); suspended through at least 2027 for misconduct. University-owned house at 1 Forest Park Lane. ΔΦ - Delta Phi, 1891–2018, 2022–25 (NIC). Commonly known as "Llenroc," the house at 100 Cornell Ave. originally built for Ezra Cornell, which the chapter acquired in 1911, Delta Phi was suspended in 2025 for five years for hazing and other violations. - Pi Lambda Phi, 1896–1901, 1911–1976 (NIC) - Theta Xi, 1903–1970, 2008–2010, (NIC)According to the 2009-2010 OFSL Annual Report, accessed January 21, 2019, - Delta Sigma Phi, Theta chapter, 1907–1943 (NIC) - Alpha Chi Rho, 1908–1971, 1976–1980, 1992–199x ? (NIC) Huntington Club - 1911–1922+, local, Episcopal affinity - Phi Kappa Sigma, 1911–1991 (NIC) - Theta Chi, 1912-1983, 1985–1999 (NIC)rules violations, AEPi, accessed June 14, 2017. local real estate blog at the time, accessed June 14, 2017. - Sigma Phi Epsilon, 1912–2005, 2006–2019 (NIC)Sigma Phi Epsilon suspended for four years, according to a July 26, 2019 Cornell Sun article, accessed July 28, 2019. - Tau Epsilon Phi, 1913–1932, 1939–2012 (NIC) Philos Club - 1914–1917, local - Sigma Upsilon, 1915–1933, local - Phi Delta Pi, 1916–1926, Jewish ΑΕΠ - Alpha Epsilon Pi, 1917–1976, 1978–2001?, 2005–2023 (NIC). Agreed to the withdrawal of recognition for at least three years, effective fall 2023, for violations of social event policy - Alpha Phi Delta, 1922–1968, 2012–2018 (NIC) - Tau Kappa Epsilon, 1923-1934, 1940–2012, 2018–2020Cornell Sun: TKE Will Lose Recognition After Reported Hospitalization, accessed May 17, 2014 - Phi Kappa Theta, 1927–1931 (NIC) - Delta Sigma Lambda, 1933–1936 (DeMolay affiliated) - Tau Delta Phi, Tau Beta chapter, 1934–1971 (NIC), Jewish Triangle, 1942–1985 (NIC) - Alpha Gamma Sigma, 1972–199x (NIC), agricultural focus - Sigma Chi Delta, 1981–2020 co-ed local - Alpha Lambda Mu, Gamma chapter, 2014–2020Cornell IFC website , accessed January 20, 2019

Other Two former IFC members withdrew from the council but remain active as residential societies on the Cornell campus. The Seal and Serpent Society, founded in 1905 and one of the oldest local fraternities in continuous existence, withdrew from the IFC in 2016 with the support of its alumni and the university. It is registered as an independent student organization and maintains its historic house at 305 Thurston Avenue. In 2020, the house voted to become gender-neutral.

The Cornell chapter of the mixed-gender agricultural professional fraternity Alpha Zeta (AZ), founded in 1901, disaffiliated from the IFC in 2020. It continues to maintain its house at 214 Thurston Avenue.

Panhellenic Council

Sororities constituting the Panhellenic Council (PHC) are listed with dates of local founding and national conference membership, these are women's organizations voluntarily coordinating their efforts within the PHC. As part of PHC or national organization self-governance, or University disciplinary action, chapters may be suspended ("de-recognized") or closed for a time. If a chapter is closed and/or forfeits its housing, it will be listed as a dormant chapter. Active groups are in bold, and dormant groups are in italics. See the Office of Student Life for current PHA members.

NPC indicates members of the National Panhellenic Conference.

Active chapters

OrganizationSymbolsChapter Chapter date and rangeAffiliationChapter house addressKappa Alpha ThetaΚΑΘIota1881–1965, 1980NPC519 Stewart AvenueKappa Kappa GammaΚΚΓPsi Deuteron1883–1969, 1977NPC508 Thurston AvenueDelta GammaΔΓChi1885NPC117 Triphammer RoadAlpha PhiΑΦDelta1889–1997, 1998NPC411 Thurston AvenuePi Beta PhiΠΒΦNY Delta1892–1893, 1919NPC330 Triphammer RoadDelta Delta DeltaΔΔΔAlpha Beta1913NPC118 Triphammer RoadKappa DeltaΚΔOmega Chi1917–1969, 1975NPC109 Triphammer RoadSigma Delta TauΣΔΤAlpha1917NPC115 Ridgewood RoadAlpha Xi DeltaΑΞΔAlpha Beta1918–1964, 2005NPC40 Ridgewood RoadAlpha Epsilon PhiΑΕΦKappa1920–1971, 197x ?NPC435 Wyckoff AvenueAlpha Chi OmegaΑΧΩZeta Phi1984NPC210 Thurston Avenue

Chapters with name changes Sennightly, 1895–1913, became ΔΔΔ ΩΧ - Omega Chi, 1916–1917, local, became ΚΔ ΦΚ - Phi Kappa, 1916–1917, local, became ΧΩ ΔΠΑ - Delta Pi Alpha, 1916–1918, local, became ΑΞΔ ΣΔΦ - Sigma Delta Phi, 1917–1919, local, became ΣΔΤ ΧΓ - Chi Gamma, 1920–1921, 1956–1964, local, became ΣΚ ΣΚ - Sigma Kappa, 1921–1956 (NPC), reverted to local ΧΓ ΚΚΨ - Kappa Kappa Psi, 1969–1977, local, re-formed as ΚΚΓ

Dormant chapters ΑΟΠ - Alpha Omicron Pi, 1908–1962, 1989–2008 (NPC) ΔΖ - Delta Zeta, 1908–1932 (NPC) ΧΩ - Chi Omega, 1917–1963, 1987–2003 (NPC) ΣΚ - Sigma Kappa, 1921–1956 (NPC) ΦΣΣ - Phi Sigma Sigma, Beta Xi chapter, 1954–1969, 2011–2023 (NPC) ΔΦΕ - Delta Phi Epsilon, 1960–1988, 1994–2003 (NPC) ΙΑΠ - Iota Alpha Pi, 1966–1967 (NPC), disbanded nationally 1971 ΑΓΔ - Alpha Gamma Delta, 1985–1996 (NPC) ΦΜ - Phi Mu, 2014–2021 (NPC)

Multicultural Greek and Fraternal Council